beto_pty
1 kW
Guys Guys guys...
We are ignoring the basic point... Regen (be it 80% efficent or 3% efficient) only works when braking, which by the way is ignoring the fact that only 12% of the energy comming from the batteries would translate in to motion on a car, the rest is heat and friction, wheel deformation, wind resistance, shock absorbers, that fancy radio with 1000 amp speakers, ac power windows, lights, blinkers, rellays, heated seats and such.
But for arguments sake lets say you get in your 80% regen tesla, start your car get on the highway which conveniently does not require you to brake, ride the highway for 2 hours in a manner where you do not brake once (would like to live in this fictional world) , get off the highway and conveniently coast to a stop at your destination without having to brake... Well your total regen was 80% of Zero... I understand my oversimplified example is imposible, but it illustrates the fact that if we brake 21 times for aprox 5 seconds each time in the course of a 1/2 hour drive from 40 mph to zero, we will be regening (acording to testla..not me) 80% of this.. allowing us to drive 80% of 105 seconds x 12% translational efficiency applied at 40 mph.. for an awesome extra 10 seconds...at the previous charging power of 40 mph.. and extra 0 .1 mile. (the example is based on me counting my braking from my home to work today)
Of course this might be different in a bumper to bumper example or when a large portion of the drive is downhill. Regen unless someone can prove me otherwise continues to be a marketing scheeme.. and a very cool sales argument...IT exists, i dont deny that... it is however not significant to 90% of the potential flatarea/non bumper to bumper users
We are ignoring the basic point... Regen (be it 80% efficent or 3% efficient) only works when braking, which by the way is ignoring the fact that only 12% of the energy comming from the batteries would translate in to motion on a car, the rest is heat and friction, wheel deformation, wind resistance, shock absorbers, that fancy radio with 1000 amp speakers, ac power windows, lights, blinkers, rellays, heated seats and such.
But for arguments sake lets say you get in your 80% regen tesla, start your car get on the highway which conveniently does not require you to brake, ride the highway for 2 hours in a manner where you do not brake once (would like to live in this fictional world) , get off the highway and conveniently coast to a stop at your destination without having to brake... Well your total regen was 80% of Zero... I understand my oversimplified example is imposible, but it illustrates the fact that if we brake 21 times for aprox 5 seconds each time in the course of a 1/2 hour drive from 40 mph to zero, we will be regening (acording to testla..not me) 80% of this.. allowing us to drive 80% of 105 seconds x 12% translational efficiency applied at 40 mph.. for an awesome extra 10 seconds...at the previous charging power of 40 mph.. and extra 0 .1 mile. (the example is based on me counting my braking from my home to work today)
Of course this might be different in a bumper to bumper example or when a large portion of the drive is downhill. Regen unless someone can prove me otherwise continues to be a marketing scheeme.. and a very cool sales argument...IT exists, i dont deny that... it is however not significant to 90% of the potential flatarea/non bumper to bumper users
